@inproceedings{crook-granell-pulman:2009:SIGDIAL,
  title = "Unsupervised Classification of Dialogue Acts using a {D}irichlet Process Mixture Model",
  author = "Crook, Nigel and Granell, Ramon and Pulman, Stephen",
  year = "2009",
  address = "London, UK",
  booktitle = "Proceedings of the SIGDIAL 2009 Conference",
  month = "September",
  pages = "341--348",
  publisher = "Association for Computational Linguistics",
  url = "http://www.aclweb.org/anthology/W09-3951",
}